25778625380 has 24 divisors (see below), whose sum is σ = 54391686720. Its totient is φ = 10262579040.

The previous prime is 25778625371. The next prime is 25778625403. The reversal of 25778625380 is 8352687752.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050120 + ... + 3058559.

It is an arithmetic number, because the mean of its divisors is an integer number (2266320280).

Almost surely, 2^25778625380 is an apocalyptic number.

25778625380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25778625380 is an abundant number, since it is smaller than the sum of its proper divisors (28613061340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25778625380 is a wasteful number, since it uses less digits than its factorization.

25778625380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108899 (or 6108897 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 25778625380 in words is "twenty-five billion, seven hundred seventy-eight million, six hundred twenty-five thousand, three hundred eighty".